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Crack path field and strain injection techniques in dynamic fracture simulations

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Lloberas Valls, OriolMés informacióMés informació
Huespe, Alfredo EdmundoMés informació
Oliver Olivella, XavierMés informacióMés informació
Dias, I.F.
Document typeConference report
Defense date2016
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
ProjectCOMP-DES-MAT - Advanced tools for computational design of engineering materials (EC-FP7-320815)
Abstract
Dynamic fracture phenomena are studied employing low cost computational tools based on Finite Elements with Embedded strong discontinuities (E-FEM). Fracture nucleation and propagation are accounted for through the injection of discontinuous strain and displacement modes inside the finite elements. The Crack Path Field technique is employed to compute the trace of the strong discontinuity during fracture propagation. Unstable crack propagation and crack branching are observed upon increasing loading rates. The variation in terms of crack pattern and energy dissipation is studied and a good correlation is found between the maximum experimental crack speed and maximum dissipation at the onset of branching. Comparable results are obtained against simulations employing supraelemental techniques, such as phase-field and gradient damage models, considering coarser discretizations which can differ by two orders of magnitude.
CitationLloberas, O., Huespe, A., Oliver, J., Dias, I. Crack path field and strain injection techniques in dynamic fracture simulations. A: European Congress on Computational Methods in Applied Sciences and Engineering. "Eccomas 2016 Proceedings". Crete Island: 2016, p. 1-18. 
URIhttp://hdl.handle.net/2117/88904
Publisher versionhttps://www.eccomas2016.org/proceedings/
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  • Departament d'Enginyeria Civil i Ambiental - Ponències/Comunicacions de congressos [1.135]
  • RMEE - Grup de Resistència de Materials i Estructures a l'Enginyeria - Ponències/Comunicacions de congressos [52]
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